ecp5: Debugging DRAM packing

Signed-off-by: David Shah <davey1576@gmail.com>

2 files changed, 23 insertions, 0 deletions

diff --git a/common/nextpnr.cc b/common/nextpnr.cc
index 068bca6f..4e6407b2 100644
--- a/common/nextpnr.cc
+++ b/common/nextpnr.cc
@@ -245,6 +245,11 @@ void Context::check() const
                 NPNR_ASSERT(ni == getBoundPipNet(w.second.pip));
             }
         }
+        if (ni->driver.cell != nullptr)
+            NPNR_ASSERT(ni->driver.cell->ports.at(ni->driver.port).net == ni);
+        for (auto user : ni->users) {
+            NPNR_ASSERT(user.cell->ports.at(user.port).net == ni);
+        }
     }
 
     for (auto w : getWires()) {
diff --git a/common/timing.cc b/common/timing.cc
index 62697353..e5e90445 100644
--- a/common/timing.cc
+++ b/common/timing.cc
@@ -164,6 +164,24 @@ struct Timing
         }
 
         // Sanity check to ensure that all ports where fanins were recorded were indeed visited
+        if (!port_fanin.empty()) {
+            for (auto fanin : port_fanin) {
+                NetInfo *net = fanin.first->net;
+                if (net != nullptr) {
+                    log_info("   remaining fanin includes %s (net %s)\n", fanin.first->name.c_str(ctx),
+                             net->name.c_str(ctx));
+                    if (net->driver.cell != nullptr)
+                        log_info("        driver = %s.%s\n", net->driver.cell->name.c_str(ctx),
+                                 net->driver.port.c_str(ctx));
+                    for (auto net_user : net->users)
+                        log_info("        user: %s.%s\n", net_user.cell->name.c_str(ctx),
+                                 net_user.port.c_str(ctx));
+                } else {
+                    log_info("   remaining fanin includes %s (no net)\n", fanin.first->name.c_str(ctx));
+
+                }
+            }
+        }
         NPNR_ASSERT(port_fanin.empty());
 
         // Go forwards topographically to find the maximum arrival time and max path length for each net